P90X Extreme No copy-write infringement intended P90x is a home exercise system that significantly improve physical fitness in 90 days through a rigorous segmented training program combined with a nutrition and dietary supplement plan. P90X emphasizes "muscle confusion", a method of cross-training and periodization achieved through switching the order of exercises and incorporating new and varied movements. Muscle confusion supposedly prevents the body from adapting to exercises over time, resulting in continual improvement without plateaus.Get videos pictures and exercise info and daily updates this amazing app that will get you in great shape in no time!!!App Features:Workout VideosExercise TipsExercise Diagram and WallpapersProper Nutrition and Workout Dietand much more !!!BEST P90X APP ON THE MARKET* Unofficial Fitness Guide *This app is not made by P90X. It is created with real user videos, and opinions on P90X.